यदि x = a "sec" theta तथा y = b tan thet...

यदि `x = a "sec" theta` तथा `y = b tan theta` हो , तो `b^2 x^2 -a^(2) y^2` का मान है :

A

ab

B

`a^2 -b^2 `

C

`a^2 +b^2 `

D

`a^2 b^2`

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The correct Answer is:

D

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